Humidifier for ovens



June 14, 1927.

HUMIDIFIER FOR OVENSl l Filed March15. 1926 2 Sheets-Sheet 1 'E'EZQLVL a l Ffg- E1- Patented Jun@ 14, 1927. l

nutren 1erMina "SALLY Maren Ann nnnivrnivn nnrrnsrnnr, "or

sr. Louis, MISSOURI.

HUMDFER FOR VENS.

i Application filed March 15,1926.' Seriall'o. 94,707..

This ii'irention relates to iuqfirovements in humiditiers for ovens.

An object of the .invention isto provide a humidifier particularly adapted tofbe used in connection with bake ovens to generate and inject into the oven :i quantity of steam for the purpose of humidi'l'yiug the atmoephere withinthe oven.

Additional advantages of the construction will appear from the following' detailed .de` scription thereofD taken in connection with the accompanying dra\ving,in which,

'Figa 1 'isa fragmentarysection of the hearth of the oven with the humidifier shown inassociation therewith.

`Fig. 2 is a front elevation of the oven wall showing an end elevation of the humidifying device-with its connections.

F is a vertical section through the oven wall taken on the line 3-3 `of`i1`ig- 1.

Fig. l is a sectionalview through the humidifying device.

5 is a vertical section on the line 5 of Fig. 4.

In thelenibodimenty of the invention illustrated in thev drawing, the device'is shown as incorporated in an oven construction, the front wall l'offwhich is shown'in Fig. @of the drawing. In suchoven construction, the over chamber 2' is disposed above-the lire arch of the furnace and is separated therefrom by masonry construction filledin with sand or other material, through which, the heat from theifurnace istransmitted to the oven chamber.

The upper portion of the intermediate wall within the oven chamber is faced with tiles to form the hearth or bottom wall 3 of the oven. In the intermediate masonry wan L1 that separates the furnace from the oven chamber, there is provided a longitudinal cavity forming a chamber 5. This chamber is constructed in the masonry of the separat ing wall t, preferably intermediate the oven door -openings 6 of the oven and at a. point belowthe bottom wall or hearth of the oven.

l/Vithin the cavity thus provided is placed the-humidifying device 'that includes a rectangular box-shaped lower section 7 formed from a bottom wall 8, side walls 9 and end walls 10. The endvwalls have an integral extension 11, the edges of which deiiect inwardly and to which are connected downwardly inclined side walls 12 and a` top wall 13. The construction is such that there is a longitudinal open space 14 at each side of vapor passing outwardly through .the lengi?` i tudinal openings 14. and into that portion of the chamber ing device, fron'rwhich chamber the steam passes upwardly between the tiles ofV thev hearth that extend over `and `form the top vali of the chamber 5, and into the oven chamber.` l

1t will be noted by reference to and that the bottoni wall 8 inclines downwardly toward the front of the `device and that on the inner surface of the bottom wall 8 'are a series of ribs 15, the purpose of which is toform ritiieplates over which unvaporized'liquid in the bottoni of they trough portion of the humidiiier is required to flow, keeping the bottom surface partially submerged.

nfhe' liquid used forforming the vapor is admitted to the humidifying chamber through a spray pipel, longitudinally dis posed within the humidifier and supported by the end`walls i10-11. The pipe 16 is closed at its rearward end and has a projectionl? .that extends into an opening)v in the rear wall of the humidiiier and the forward end of the pipe 16 extends outwardly through an opening in the front wall thereof and is connected with a supply pipe 18. Through the upper portion of the pipe 16, there is a spaced series of jet openings 19 through which. the liquid from the pipe 16 Vis sprayed against the dome portion of the humidifier.

Inasmuch as the device is supportedin the oven construction in the wall between the furnace arch and the oven, it will be suiii-V cientlyheated throughout its surface to vaporize a substantial portion of the liquid admitted through the pipe 16, which vapor` or steam escapes into the chamberl 5 andl thence through the parting between the tiles Figs. 3

eol

ofthe hearth over the chamber 5 into the Y 5 -OVGIL humidity required for the Vof the oven.

` may be preheated in order to prevent undue cooling ot the Walls of the humidiiier and thereby the proper humidity ot the atmosphere Within the oven may be maintained. The excess liquid accumulates in the troughlilre portion in the bottom of the humidiiier, and is continuously vaporized by the heat radiated from the vvalls ot the chamber 5. In order to prevent an ez-rcess accumulation of liquid in the bottom oi'l the trough, a discharge pipe 21 is connected into the forward end of the humidilier near the bottom Wall thereof.

It will be understood trom the foregoing description that the humidifier may Y be cheaply constructed and may be installed in any standard oveniconstruction, and that it will be effective in maintaining the proper proper operation lt desired, the supply liquid facilitating the conversion oic the liquid into the humidiiying vapor.

We are atvare that the invention may be modified in` various particulars Without departing trom the spirit and scope thereof, and We do not limit ourselves unessentially.

Vfhat Weclaiin and desire to secure by Letters Patent is r l. ln a balre oven, the combination With a tire chamber and an oven With an intermediate horizontally disposed Wall therebe tween, oi' a chamber formed in said Wall, a humidi'ying device mounted in said chamber comprising a trough portion and a dome portion with intern'iediate outlet passages, a spray pipe connected into said humidi'ying devicey and means tor controlling the supply of liquid to said spray pipe.

2. ln an oven, the combination with an oven chamber, a recess formed in the bottom wall of the chamber, said recess being Walled at the top by spaced tile of the hearth of the oven, a humidifying device spaced from the side Walls ogt said recess, said humidiiying device including ahousing With Ioutlet openings therein, a spray pipe longitudinally disposed Within said housing, and means for admitting measured quantities ot liquid to said housinv.

3. In an oven, the combination with an oven chamber, a recess formed in the bottom Wall ot the chamber, said recess being walled at the top by spaced tile of the hearth of the oven, a humiditying device spaced from the side walls ot said recess` said huinidiiying device including a housing With outlet openings therein, a spray pipe longi tudinally disposed within said housing, means for admitting measured quantities of liquid torsaid housing, and ai drain pipe for draining the excess liquid from said housing.

il. A humidit'ying device comprising a housing having a trouglrshaped lower portion and a dome with inclined side Walls, with a space between said dome and said lower portion, a pipe running longitudinally through said housing having a plurality oi' outlet openings therein for ejecting iiuid against the Walls ot said dome portion, and means tor controlling the admission ot liquid to said pipe.V

5. A, humiditying device comprising a housing having a trough-shaped lower portion and a dome With inclined side Walls, with a spacebetween said dome and said lower portion, a plurality ot Vtrain-iversely extending ribs on the bottom Wall oi' said troughportion, a pipe running longitudinally through said housing having a plurality ot outlet openings therein for ejecting iiuid agaii'ist the Walls ot said dome portion, and means for controlling the admission ol" liquid to said pipe.

' SALLY lvlAYER. v

HERMANN NAHitt-SHEDT. 

